maven中指定jdk编译版本

<properties>
  <!-- 文件拷贝时的编码 -->
  <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
  <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
  <!-- 编译时的编码 -->
  <maven.compiler.encoding>UTF-8</maven.compiler.encoding>
  <maven.compiler.source>11</maven.compiler.source>
  <maven.compiler.target>11</maven.compiler.target>
  <maven.compiler.compilerVersion>11</maven.compiler.compilerVersion>
  <java.version>11</java.version>
</properties>